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1. N7-methylguanosine methylation-related regulator genes as biological markers in predicting prognosis for melanoma

Author

Jiehua Deng, Jiahua Lin, Chang Liu, Jiasong Li, Jun Cai, Xiyu Zhou, and Xiong Li

Subjects
Medicine, Science
Abstract

Abstract The aim of this study is to find those N7-methylguanosine (m7G) methylation-related regulator genes (m7GMRRGs) which were associated with melanoma prognosis and use them to develop a prognostic prediction model. Clinical information was retrieved online from The Cancer Gene Atlas (TCGA) and the Gene Expression Omnibus (GEO). R software was used to extract m7GMRRGs by differential expression analysis. To create a prognostic risk model, univariate and multivariate Cox regression analyses were employed for the evaluation of the prognostic significance of m7G methylation modifiers. Internal validation using cohort from TCGA (training set) and external validation using cohort from GEO (validation set) of the model were carried out. The model’s predictive performance was confirmed by using the Kaplan–Meier, univariate, and multivariate Cox regression, and receiver operating characteristic curve (ROC) by constructing column line plots incorporating clinical factor characteristics. Immune infiltration analyses were performed to assess the immune function of m7GMRRGs. Drug sensitivity analysis was conducted to study chemotherapeutic drug treatment cues. Prognostic models using four m7GMRRGs (EIF4E3, LARP1, NCBP3, and IFIT5) showed good prognostic power in training and validation sets. The area under the curve (AUC) at 1, 3, and 5 years for GEO-melanoma were 0.689, 0.704, and 0.726, respectively. The prediction model could distinctly classify patients with melanoma into different risk subgroups (P

Published
2022
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2. Comparison of meatal-based flap (Mathieu) and tubularized incised-plate (TIP) urethroplasties for primary distal hypospadias: A systematic review and meta-analysis

Author

Xinye Zhou, Xuwei Hong, Jiahua Lin, Hong Huang, Yuanfeng Zhang, Yi Huang, Kaijian Lan, Weichu Wu, Yizhou Zhou, Zeren Shen, Ze-pai Chi, Shaochuan Chen, and Yonghai Zhang

Subjects
Male, medicine.medical_specialty, Urologic Surgical Procedures, Male, Urethroplasty, medicine.medical_treatment, Fistula, Surgical Flaps, 03 medical and health sciences, 0302 clinical medicine, Urethra, Suture (anatomy), 030225 pediatrics, Statistical significance, Humans, Medicine, Hypospadias, business.industry, Wound dehiscence, General Medicine, Plastic Surgery Procedures, medicine.disease, Meatal stenosis, Surgery, Treatment Outcome, 030220 oncology & carcinogenesis, Meta-analysis, Pediatrics, Perinatology and Child Health, business
Abstract

Purpose We conducted this meta-analysis to compare postoperative outcomes between meatal-based flap (Mathieu) and tubularized incised plate (TIP) techniques for distal hypospadias. Methods A comprehensive literature search of PUBMED, Web of Science, EMBASE, and Cochrane Library was conducted. Outcomes evaluated in this review were fistula, meatal stenosis, wound dehiscence and flap necrosis. We calculated odds ratio (OR) with 95% confidential interval (CI) to compare postoperative outcomes between Mathieu and TIP after data extraction and literature identification. All data were analyzed using Review Manager 5.2. In order to find potential affective factors, meta-regression and subgroup analyses were applied. Results 16 studies, 1386 patients, including 762 patients receiving Mathieu and 624 individuals subjected to TIP met the inclusion criteria. The synthetic data suggested that Mathieu and TIP were comparable in terms of fistula (OR = 0.93; 95% CI: 0.65 to 1.33; P = 0.70, I2 = 14%), wound dehiscence (OR = 0.89; 95% CI: 0.33 to 2.39; P = 0.81, I2 = 11%), and flap necrosis (OR = 1.9; 95% CI: 0.51 to 7.09; P = 0.20, I2 = 38%) without significant heterogeneity for each comparison group. Pooled estimates showed a significantly lower rate of meatal stenosis with Mathieu than with TIP (OR = 0.41; 95% CI: 0.24 to 0.73; P = 0.002, I2 = 4%). Subgroup analyses showed that the difference between Mathieu and TIP was more obvious in the studies published before 2013 in meatal stenosis. The modified Mathieu technique and a running suture for urethroplasty might be relevant to a lower rate of meatal stenosis in the data, although no statistical significance in the present effects model overall was found. One-way sensitivity analysis showed that the results were stable. There was no publication bias detected using both funnel plot and Egger's test. Conclusion This meta-analysis suggested that Mathieu and TIP technique were equivalent for primary distal hypospadias in terms of fistula, wound dehiscence, and flap necrosis. Pooled estimates indicated that there was a lower rate of meatal stenosis with Mathieu rather than with TIP significantly. The modified Mathieu technique and a running suture for urethroplasty might be relevant to a lower rate of meatal stenosis. Type of study Meta-analysis. Level of evidence IV

Published
2020
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